cmake: add options to build styles as plugins

Signed-off-by: Alexander Golubev <fatzer2@gmail.com>

CMakeLists.txt

@@ -123,16 +123,27 @@ option( WITH_MODULE_SQL         "Build the SQL module"          ${WITH_MODULE_AL
 
 ##### user requested styles:
 
-option( WITH_STYLE_ALL       "Build all style"        ${WITH_MODULE_STYLES} )
-option( WITH_STYLE_MOTIF     "Build Motif style"      ${WITH_STYLES_ALL} )
-option( WITH_STYLE_WINDOWS   "Build Windows style"    ${WITH_STYLES_ALL} )
+option( BUILD_STYLE_PLUGIN_ALL       "Build all styles as plugins"      OFF )
+option( BUILD_STYLE_PLUGIN_MOTIF     "Build Motif style as plugin"      ${BUILD_STYLE_PLUGIN_ALL} )
+option( BUILD_STYLE_PLUGIN_WINDOWS   "Build Windows style as plugin"    ${BUILD_STYLE_PLUGIN_ALL} )
+option( BUILD_STYLE_PLUGIN_CDE       "Build CDE style as plugin"        ${BUILD_STYLE_PLUGIN_ALL} )
+option( BUILD_STYLE_PLUGIN_MOTIFPLUS "Build Motif plus style as plugin" ${BUILD_STYLE_PLUGIN_ALL} )
+option( BUILD_STYLE_PLUGIN_SGI       "Build SGI style as plugin"        ${BUILD_STYLE_PLUGIN_ALL} )
+option( BUILD_STYLE_PLUGIN_COMPACT   "Build compact style as plugin"    ${BUILD_STYLE_PLUGIN_ALL} )
+option( BUILD_STYLE_PLUGIN_PLATINUM  "Build platinium style as plugin"  ${BUILD_STYLE_PLUGIN_ALL} )
+option( BUILD_STYLE_PLUGIN_INTERLACE "Build interlace style as plugin"  OFF )
+
+
+option( WITH_STYLE_ALL       "Build all style"        ${WITH_ALL_OPTIONS} )
+option( WITH_STYLE_MOTIF     "Build Motif style"      ${WITH_STYLE_ALL} )
+option( WITH_STYLE_WINDOWS   "Build Windows style"    ${WITH_STYLE_ALL} )
 ## Depend upon WITH_MOTIF_STYLE
-option( WITH_STYLE_CDE       "Build CDE style"        ${WITH_STYLES_ALL} )
-option( WITH_STYLE_MOTIFPLUS "Build Motif plus style" ${WITH_STYLES_ALL} )
-option( WITH_STYLE_SGI       "Build SGI style"        ${WITH_STYLES_ALL} )
+option( WITH_STYLE_CDE       "Build CDE style"        ${WITH_STYLE_ALL} )
+option( WITH_STYLE_MOTIFPLUS "Build Motif plus style" ${WITH_STYLE_ALL} )
+option( WITH_STYLE_SGI       "Build SGI style"        ${WITH_STYLE_ALL} )
 ## Depend upon WITH_WINDOWS_STYLE
-option( WITH_STYLE_COMPACT   "Build compact style"    ${WITH_STYLES_ALL} )
-option( WITH_STYLE_PLATINUM  "Build platinium style"  ${WITH_STYLES_ALL} )
+option( WITH_STYLE_COMPACT   "Build compact style"    ${WITH_STYLE_ALL} )
+option( WITH_STYLE_PLATINUM  "Build platinium style"  ${WITH_STYLE_ALL} )
 option( WITH_STYLE_INTERLACE "Build interlace style"  OFF )
 
 ## NOTE: Interlace is OFF by default due to it being experimental

src/styles/CMakeLists.txt

@@ -27,13 +27,13 @@ set( _STYLE_COMPACT_SRC_   qcompactstyle.cpp   )
 set( _STYLE_INTERLACE_SRC_ qinterlacestyle.cpp )
 set( _STYLE_PLATINUM_SRC_  qplatinumstyle.cpp  )
 
-# check style dependencies
-tqt_requires( WITH_STYLE_CDE       WITH_STYLE_MOTIF   )
-tqt_requires( WITH_STYLE_MOTIFPLUS WITH_STYLE_MOTIF   )
-tqt_requires( WITH_STYLE_SGI       WITH_STYLE_MOTIF   )
-tqt_requires( WITH_STYLE_INTERLACE WITH_STYLE_WINDOWS )
-tqt_requires( WITH_STYLE_PLATINUM  WITH_STYLE_WINDOWS )
-tqt_requires( WITH_STYLE_COMPACT   WITH_STYLE_WINDOWS )
+# setup style dependencies
+set( _STYLE_CDE_DEPEND_       MOTIF   )
+set( _STYLE_MOTIFPLUS_DEPEND_ MOTIF   )
+set( _STYLE_SGI_DEPEND_       MOTIF   )
+set( _STYLE_INTERLACE_DEPEND_ WINDOWS )
+set( _STYLE_PLATINUM_DEPEND_  WINDOWS )
+set( _STYLE_COMPACT_DEPEND_   WINDOWS )
 
 # styles unsupported on X11
 set ( _disabled_styles
@@ -43,12 +43,44 @@ set ( _disabled_styles
     TQT_NO_STYLE_MAC
 )
 
+# process the style options
 foreach( _style MOTIF WINDOWS CDE MOTIFPLUS SGI COMPACT INTERLACE PLATINUM )
-    if( WITH_STYLE_${_style} )
-        list( APPEND _SRC_ "${_STYLE_${_style}_SRC_}" )
+
+    if( WITH_STYLE_${_style} AND NOT BUILD_STYLE_PLUGIN_${_style} )
+        if( DEFINED _STYLE_${_style}_DEPEND_ )
+            set( _depend ${_STYLE_${_style}_DEPEND_} )
+            if( NOT WITH_STYLE_${_depend} )
+                tde_message_fatal( "style ${_style} requires ${_depend} to build" )
+            endif( )
+        endif( )
+        list( APPEND _SRC_ ${_STYLE_${_style}_SRC_} )
      else( )
         list( APPEND _disabled_styles "TQT_NO_STYLE_${_style}" )
     endif( )
+
+    if( BUILD_STYLE_PLUGIN_${_style} )
+
+        unset( _style_depend_lib )
+
+        if( DEFINED _STYLE_${_style}_DEPEND_ )
+            set( _depend ${_STYLE_${_style}_DEPEND_} )
+            if( BUILD_STYLE_PLUGIN_${_depend} )
+                string( TOLOWER "q${_depend}style-shared" _style_depend_lib )
+             elseif( NOT WITH_STYLE_${_depend} )
+                tde_message_fatal( "style ${_style} requires ${_depend} to build" )
+            endif( )
+        endif( )
+
+        string( TOLOWER "q${_style}style" _style_lib )
+        tde_add_library( ${_style_lib} SHARED
+          SOURCES ${_STYLE_${_style}_SRC_}
+          LINK tqt-mt-shared ${_style_depend_lib}
+          DESTINATION "${QT_INSTALL_PLUGINS}/styles"
+        )
+        tqt_automoc( ${_style_lib}-shared )
+
+    endif( )
+
 endforeach( )
 
 tde_add_library( ${target} STATIC_PIC